scsimgr SCSI Management and Diagnostics utility on HP-UX 11i v3 (March 2008)

The instance numbers of FCP array interfaces (virtual buses) in the legacy view, corresponding to the
two target ports of the disk array DA1 are shown in the output of the ioscan command below. These
instance numbers can be correlated with the legacy DSFs.
# ioscan -kfnCext_bus -H 0/4/1/0/4/0
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
ext_bus 15 0/4/1/0/4/0.1.2.0.0 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 14 0/4/1/0/4/0.1.2.255.0 fcd_vbus CLAIMED INTERFACE FCP Device Interface
ext_bus 17 0/4/1/0/4/0.1.4.0.0 fcd_vbus CLAIMED INTERFACE FCP Array Interface
ext_bus 16 0/4/1/0/4/0.1.4.255.0 fcd_vbus CLAIMED INTERFACE FCP Device Interface
The following output of ioscan shows the legacy DSFs corresponding to the lunpaths of each disk.
# ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/rdisk/disk86 /dev/rdsk/c15t0d1
/dev/rdsk/c17t0d1
/dev/rdisk/disk87 /dev/rdsk/c15t0d2
/dev/rdsk/c17t0d2
/dev/rdisk/disk88 /dev/rdsk/c15t0d3
/dev/rdsk/c17t0d3
/dev/rdisk/disk89 /dev/rdsk/c15t0d4
/dev/rdsk/c17t0d4
/dev/rdisk/disk90 /dev/rdsk/c15t0d5
/dev/rdsk/c17t0d5
An application ‘A’ opened the legacy DSF /dev/rdsk/c17t0d1 to transfer data to disk86. While the
I/O transfers are going on, reconfigure the SAN by connecting the port ‘5’ of the switch SW1 to the
target port ‘7’ of the disk array DA2. The target port ‘7’ has the following information:
• Area address: 4
• Port address: 0
• WWN: 0x50002fe250006e6c
Based on this information, the hardware path of the target path of DS2 is:
0/4/1/0/4/0.0x50002fe250006e6c. The corresponding legacy target path hardware paths start
with: 0/4/1/0/4/0.1.4.
After the SAN reconfiguration, the target path of the disk array DA1 with the hardware path
0/4/1/0/4/0.0x50001fe150006e68 as well as lunpaths beneath it are no longer available.
Run the ioscan command to re-initiate the device probing.
The following output of the ioscan shows the new disks (instance 91 to 95) from DSA2.
# ioscan -knNfCdisk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 86 64000/0xfa00/0x6 esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk86 /dev/rdisk/disk86
disk 87 64000/0xfa00/0x7 esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk87 /dev/rdisk/disk87
disk 88 64000/0xfa00/0x8 esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk88 /dev/rdisk/disk88
disk 89 64000/0xfa00/0x9 esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk89 /dev/rdisk/disk89
disk 90 64000/0xfa00/0xa esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk90 /dev/rdisk/disk90
disk 91 64000/0xfa00/0xb esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk91 /dev/rdisk/disk91
disk 92 64000/0xfa00/0xc esdisk CLAIMED DEVICE COMPAQ HSV111 (C)COMPAQ
/dev/disk/disk92 /dev/rdisk/disk92
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